Abstract: A plurality of slots are provided so as to be located between a thin plate flexible opening section screen member and a heating chamber wall surface 1 for allowing insertion of the opening section screen member. A gently-curved bulging surface exists in an area where the heating chamber wall surface 1 and the opening section screen member 5 are mated together. As a result, residual warpage which would otherwise remain when the opening section screen member is warped for attachment becomes invisible, thereby preventing occurrence of clearance, which would cause sparking or the like.

Abstract: A plurality of slots are provided so as to be located between a thin plate flexible opening section screen member and a heating chamber wall surface 1 for allowing insertion of the opening section screen member. A gently-curved bulging surface exists in an area where the heating chamber wall surface 1 and the opening section screen member 5 are mated together. As a result, residual warpage which would otherwise remain when the opening section screen member is warped for attachment becomes invisible, thereby preventing occurrence of clearance, which would cause sparking or the like.

Abstract: This invention relates to a heat cooking apparatus having a flat heater firmly attached to an outside surface of the wall surface of the heating chamber the flat surface being composed of flatly configured heating elements with a heat-proof insulator therebetween. Also, by forming a non-metallic layer on the inner surface of the metallic wall surface facing the heating elements, heat from the heater is efficiently and uniformly conducted so as to perform uniform heating and high heat-cooking efficiency.

Abstract: A heating and cooking apparatus has a kneading trough detachably installed in a heating chamber of the apparatus and provided with a handle for easy carrying for a user. Since both the kneading trough and a portion to be engaged with the kneading trough in the heating chamber are formed square, the force in the rotating direction during the operation can be positively received by the corners, thereby enhancing the strength of the apparatus, without rattlings or wearing-out or disengagement of the engaging portion therebetween.

Abstract: A high frequency heating apparatus wherein oven heating and grill heating are performed by means of a flat heating element, and no heater and projections such as an insulator for holding a heater are provided, whereby, when high frequency microwave energy is supplied to the heating chamber with an oven plate placed in the heating chamber, abnormal heating such as local heating and sparks do not occur. Also, with the oven plate placed in the heating chamber, heating can be performed by means of high frequency microwaves and a heater which can be used alternately or in combination depending on situations to obtain the most preferably heating condition.

Abstract: A heat cooking apparatus is provided with a heater comprising a plurality of metal, electric heating wires and a plurality of mica to insulate said wires, which is formed as a flat shape to provide on the outside of the heating chamber with substantially the same area as the ceiling of heating chamber, and which is firmly mounted onto said ceiling of the heating chamber by a heat resistant insulator and a metal keep plate.